ios - 更改所有导航栏中的标题文本颜色和字体

Question

我正在使用 swift 2 和最新版本的 Xcode，我正在尝试更改每个导航栏中标题文本的字体大小、名称和颜色。我在 didFinishLaunchingWithOptions 区域的 AppDelegate 部分中编写了以下代码，但它只会更改颜色，不会影响字体的大小或类型。当我去掉颜色线时，标题就在 NSFontAttributeName 行之后。有没有办法让两行代码都执行？我还没有找到任何允许您在代码中更改两者的东西...

   func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        // Override point for customization after application launch.


        UIApplication.sharedApplication().statusBarStyle = .LightContent
        UINavigationBar.appearance().titleTextAttributes = [NSFontAttributeName: (UIFont(name: "AvenirNext-DemiBold", size: 50.0))!]
        UINavigationBar.appearance().titleTextAttributes = [NSForegroundColorAttributeName : UIColor(red: 244/255, green: 234/255, blue: 166/255, alpha: 1.0)]


        return true
    }

Answer 1

你的代码很愚蠢。您设置了 titleTextAttributes，然后丢弃您刚设置的值并替换它为另一个值!

UINavigationBar.appearance().titleTextAttributes = 
    [NSFontAttributeName: (UIFont(name: "AvenirNext-DemiBold", size: 50.0))!]
UINavigationBar.appearance().titleTextAttributes = 
    [NSForegroundColorAttributeName : UIColor(red: 244/255, green: 234/255, blue: 166/255, alpha: 1.0)]

如果这不是您想要的，请将 titleTextAttributes 设置为仅一个值，即包含两个设置的字典:

UINavigationBar.appearance().titleTextAttributes = [
    NSFontAttributeName: (UIFont(name: "AvenirNext-DemiBold", size: 50.0))!,
    NSForegroundColorAttributeName : UIColor(red: 244/255, green: 234/255, blue: 166/255, alpha: 1.0)
]